42801511 has 2 divisors, whose sum is σ = 42801512. Its totient is φ = 42801510.

The previous prime is 42801487. The next prime is 42801527. The reversal of 42801511 is 11510824.

42801511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42801511 - 2¹³ = 42793319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42801611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21400755 + 21400756.

It is an arithmetic number, because the mean of its divisors is an integer number (21400756).

Almost surely, 2^42801511 is an apocalyptic number.

42801511 is a deficient number, since it is larger than the sum of its proper divisors (1).

42801511 is an equidigital number, since it uses as much as digits as its factorization.

42801511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 42801511 is about 6542.2863740439. The cubic root of 42801511 is about 349.7999155715.

The spelling of 42801511 in words is "forty-two million, eight hundred one thousand, five hundred eleven".